One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,9,14,10,13,25,24)(7,11,18,27,17,15,23,30)(8,19,21,12,20,28,22,29)(16,32,33,26,34,36,35,31)(1,2)(3,4)(5,7,9,23,10,17,25,18)(6,11,24,27,13,15,14,30)(8,16,22,33,20,34,21,35)(12,26,28,32,29,31,19,36)(2,4)(5,6)(7,15)(8,12)(9,24)(10,13)(11,17)(14,25)(16,31)(18,27)(19,21)(20,29)(22,28)(23,30)(26,34)(32,35)(33,36) involution — undirected(5,8,9,22,10,20,25,21)(6,12,24,28,13,29,14,19)(7,16,23,33,17,34,18,35)(11,26,27,32,15,31,30,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.